Trumpet Vine

Question

At what time in the spring does the vine start to leaf?

Answer 1

Trumpet Vine is slow to leaf out in the spring, so don't assume it has died off.
Use this time to prune out any dead material. The vine flowers will form on new growth.

https://www.gardeningknowhow.com/ornamental/vines/trumpet-vine/growing-trumpet-vines.htm